. >> plus, another twist in the aaron hernandez case. investigators are looking at whether he was involved in gun trafficking. >> and is it real or is this just rhetoric? russian president vladimir putin welcomes all olympians, regardless of sexual orientation. we're going to dig into that. you are live in the "cnn newsroom." >>> good morning, everyone. i'm poppy harlow in today for carol costello. >> and i'm martin savidge. questions about nsa spying on world leaders. what did president obama know and when did he know it? today, the directors of the national intelligence and nsa testify on capitol hill. the president has ordered a review of intelligence gathering. cnn's jim sciutto joins us from washington. >> reporter: the administration now considering hard limits on intelligence gathering. particularly of word leaders overseas. this is part of a see view that began this summer. the same review which is how the white house says the president first learned on spying on foreign leaders such as german's angela merkel. saying the presiden